<?php
$options="";

                   include_once("php/conexion.php");
                      $con = new Conexion;
                      if($con->conectar()==true){ 
                        
                        $result1=@mysql_query("select * from region;");
                        echo "<select name='select1' id='select1' >";
                        while($fila=mysql_fetch_array($result1)){
                            $options.="<option value='".$fila['REGION_ID']."'>".$fila['REGION_NOMBRE']."</option>";
                            
                        }
                        echo utf8_encode($options);
                        echo "</select>";
                    }
                    ?>